20=0.9n

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Solution for 20=0.9n equation: 



20=0.9n

We move all terms to the left:

20-(0.9n)=0

We add all the numbers together, and all the variables

-(+0.9n)+20=0

We get rid of parentheses

-0.9n+20=0

We move all terms containing n to the left, all other terms to the right

-0.9n=-20

n=-20/-0.9

n=22+0.2/0.9

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